We are the official body that deals with astrometric observations and orbits of minor planets (asteroids) and comets.

A question from Lyla, age 5. Dr. Federica Spoto answers. For more on Dr. Spoto’s work, see episode 190 .

We try, a second time, to answer a question from Maeve, who is almost 3 years old. Dr. Matthew Kenworthy answers. For more on rainbows on other planets, see episode 232 .

We try, a second time, to answer a question from Maeve, who is almost 3 years old. Dr. Matthew Kenworthy answers. For more on rainbows on other planets, see episode 232 .

Pick the mainstream apps you used before, show the privacy-respecting tools you have switched to, and share your privacy wins!

A question from Ida, age 4. Miho Janvier answers. Find out more about the Solar Dynamics Observatory , the Solar and Heliospheric Observatory (SOHO) , Solar Orbiter ,  and Proba-3 . For mor...

A question from Ida, age 4. Miho Janvier answers. Find out more about the Solar Dynamics Observatory , the Solar and Heliospheric Observatory (SOHO) , Solar Orbiter ,  and Proba-3 . For mor...

Placing the Near-Earth Object Impact Probability in Context, Nugent, C. R., Andersen, K. P., Bauer, James M., Jensen, C. T., Kristiansen, L. K., Hansen, C. P., Nielsen, M. M., Vestergård, C. F.

Placing the Near-Earth Object Impact Probability in Context, Nugent, C. R., Andersen, K. P., Bauer, James M., Jensen, C. T., Kristiansen, L. K., Hansen, C. P., Nielsen, M. M., Vestergård, C. F.

Candice Hansen-Koharcheck, a Planetary Science Institute senior scientist since 2010, died on April 11 after a valiant three-year battle with cancer. Her

A question from Kellan, age 6. Professor Kim McLeod answers. To learn more about Wellesley College’s Whitin Observatory, including public visit nights, go here . For more on what you can do to redu...

We report observations of stripe-like features in Enceladus' plumes captured simultaneously by Cassini's VIMS-IR and ISS NAC instruments during flyby E17, with similar patterns seen in VIMS-IR data fr...

Placing the Near-Earth Object Impact Probability in Context, Nugent, C. R., Andersen, K. P., Bauer, James M., Jensen, C. T., Kristiansen, L. K., Hansen, C. P., Nielsen, M. M., Vestergård, C. F.

A question from Issac, age 5. Dr. Nancy Chabot answers. For more on Dr. Chabot’s work, see episodes 7 and 152 . For more on the Planetary Defense, see this NASA website . For more on the DART m...

A question from Issac, age 4. Dr. Jeff Rich answers. For more on Dr. Rich's work, see episodes 14 , 81 , 118 , or 159 , or visit the Carnegie Observatories website . Find the pocket solar syste...

A question from Renny, age 4. Dr. Jessie Christensen answers. For more on Dr. Christensen's work, see episodes 42 and 102 .

Samples returned from asteroid Bennu contain bio-essential sugars such as ribose and glucose that may have formed in the parent asteroid from brines containing formaldehyde, according to a geochemical...

A question from Sabine, age 5. Dr. Christopher Snead answers. For more on Dr. Snead's work, see Episode 184 of Spacepod.

A guided journey through the inner workings of Earth, the cloaked mysteries of other planets in our solar system, and beyond.Extreme heat. Extreme cold. Extreme pressure. Toxic gases. Scorching magma ...